I usually turn off my GPS to save batery. However, I would like to be able to turn the GPS on remotely and get its coordinates (e.g. by e-mail). Today a friend of mine almost lost her phone on the forest... In case next time it were my phone, I would like to be able to locate it easily.
I tried Android Device Manager as mentioned here but it gives me the coordinates of the last time I had my GPS on and it does NOT turn the GPS on to give me the latest/current coordinates.